Improved metallic alloy to imitate the precious metals



dilated fifties paw emit.

' LORENZO SIBERT, or STAUNTON, VIRGINIA.

Letters Patent No. 100,937, dated March 15, 1870.

IMPROVED METALLIC ALLOY TO IMI'IATE THE PRECIOUS METALS.

The Schedule referred to in these Letters Patent and making part of the same.

I exact description thereof.

My alloy is composed of manganic steel, copper, zinc, and manganese, in about the proportions and under the treatment hereinafter specified.

To produce an alloy representing gold, I .use one part of manganic steel, three-fourths part of copper, five-eighths part of zinc, and five-eighths part of powdered manganese.

To resemble silver, I take one part of manganic steel, one-sixteenth part of copper, seven-eighths part of zinc, and one-half part of powdered manganese.

Representations of other metals may be produced by varying the proportions. Thesealloys are not affected by the action of acids. The first mentioned is very malleable, whilst the other is best adapted for casting, and in theirhigher grades are susceptible of being tempered like steel for edge-tools and other purposes for which the latter is applicable.

Gommon steel or iron first alloyed with manganese may be used instead of manganic steel.

In compounding, I take the molten iron or steel from the reducing-furnace into a receiver, and then mix in the oopper, zinc, and manganese, keeping it well agitated. Silica may be used either in the reduction of the ore or in the receiver.

LORENZO SIBERT.

Any of the carbonates, borax, or nitrate of potassa may be used as a 

